Chris Tomlin announced via Twitter that he and his wife, Lauren, welcomed a daughter into the world September 22, 2011. Ashlyn Alexandra Tomlin is the first child for the songwriter.
Tumors that lie along, or compress, the optic path may cause visual hallucinations. In one case series, 13 of 59 patients with temporal lobe tumors experienced visual hallucinations. These hallucinations are described as complex and may involve vivid scenes (including people carrying out mundane tasks).
What you are describing could be a visual hallucination or a delusion (a mistaken belief). In either case there are many possible causes. Sometimes sensory loss, in the form of vision and hearing loss, causes people to hear and see things that are not there. There are also medications that can cause hallucinations or delusions or medications that are not being prescribed or taken properly.